Claiming that grasping an apple is an intrinsically more complex specialization than a ball without metrics is not credible. What are the measurable thresholds for grip force, precision, or surface variability that justify this hierarchy? Without a representative sample of manipulation tasks or a sample size (n) large enough, it's a generalization. If the goal is to manipulate small objects of regular shape in a production line, a ball can be a more relevant test than an apple.